#define _CRT_SECURE_NO_WARNINGS 1

#include<stdio.h>

int Add(int x, int y) {
	int sum = 0;
	sum = x + y;
	return sum;
}

int main() {
	int a = 10;
	int b = 20;
	int c = 0;
	int ret = Add(a, b);
	printf("%d", ret);
	return 0;
}